Question

Assertion (A) $C_{4}$ plants can survive in high temperature.
Reason (R) PEP Case enzyme works at high temperature only.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (A)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
$PEP$ carboxylase is the primary $CO _{2}$ acceptor in $C _{4}$ - plants and this enzyme works at high temperature only. Thus, $C _{4}$-plants can survive in high temperature.